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Anhydrous stemming and preparation method thereof

A technology of anhydrous taphole clay and bauxite, which is applied in the production of ceramic materials to achieve the effect of increasing bulk density and enhancing anti-scour ability.

Active Publication Date: 2022-05-27
GONGYI CITY HONGYU REFRACTORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterless taphole clay in the prior art cannot meet the above requirements at the same time

Method used

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Examples

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Effect test

preparation example Construction

[0029] The preparation method of anhydrous tap clay as above, comprises the following steps:

[0030] First, the solid raw materials are mixed and stirred evenly, and then the liquid raw materials are added to continue stirring. After stirring evenly, a mud-like semi-finished product is obtained.

[0031] In the prior art, screw extrusion molding equipment is generally used to extrude anhydrous taphole clay. Since the raw material is easy to block the screw, a certain obstacle is caused to the extrusion of the taphole clay, and the bulk density of the molded taphole clay is affected. The application adopts the hydraulic extrusion method, which can provide a pressure of more than 10Mpa to directly extrude the clay from the extrusion port. The density of anhydrous taphole clay can be 1.8 ~ 2.0g / cm 3 Raised to 2.4g / cm 3 about.

[0032] The hydraulic taphole clay extrusion equipment preferably adopts the waterless taphole clay extrusion molding device provided by CN202120606869...

Embodiment 1

[0036] The anhydrous taphole clay provided by the present embodiment is prepared from the following raw materials by weight:

[0037] 15 parts of bauxite and 15 parts of pyrophyllite with an average particle size of 2mm;

[0038] 10 parts of bauxite and 10 parts of silicon carbide with an average particle size of 0.5 mm;

[0039] 3 parts of kyanite with a sieving mesh number of not less than 80 meshes;

[0040] 8 parts of 200 mesh bauxite, 6 parts of silicon carbide, 11 parts of ferrosilicon nitride, 9 parts of ball clay, and 2 parts of graphite;

[0041] 3 parts of thermosetting phenolic resin, 7 parts of modified asphalt, 12 parts of tar, and 4 parts of nano-silica sol.

[0042] Among them, Al in bauxite 2 O 3 The mass percentage is 91%, the mass percentage of SiC in silicon carbide is 94%, and the Al in ball clay 2 O 3 The mass percentage is 46%.

[0043] The preparation method of anhydrous tap clay as above, comprises the following steps:

[0044] First mix the sol...

Embodiment 2

[0048] The anhydrous taphole clay provided by the present embodiment is prepared from the following raw materials by weight:

[0049] 15 parts of bauxite and 15 parts of pyrophyllite with an average particle size of 2mm;

[0050] 10 parts of bauxite and 10 parts of silicon carbide with an average particle size of 0.5 mm;

[0051] 3 parts of kyanite with a sieving mesh number of not less than 80 meshes;

[0052] 8 parts of 200 mesh bauxite, 5 parts of silicon carbide, 12 parts of ferrosilicon nitride, 9 parts of ball clay, and 2 parts of graphite;

[0053] 3 parts of thermosetting phenolic resin, 7 parts of modified asphalt, 12 parts of tar, and 3 parts of nano-silica sol.

[0054] The preparation method of anhydrous tap clay as above, comprises the following steps:

[0055] First mix the solid raw materials, stir at 110°C for 40 minutes, then add liquid raw materials and continue to stir, after stirring for 30 minutes, a mud-like semi-finished product is obtained. , to obt...

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Abstract

The invention discloses anhydrous stemming which is prepared from the following raw materials in parts by weight: 12-18 parts of bauxite with the average particle size of 1-3mm and 12-18 parts of pyrophyllite. 8-12 parts of bauxite with the average particle size of 0-1 mm and 8-12 parts of silicon carbide; 2-4 parts of kyanite of which the mesh number is not less than 80 meshes; 7-9 parts of bauxite, 5-7 parts of silicon carbide, 10-12 parts of ferro-silicon nitride, 8-10 parts of ball clay and 1.5-2.5 parts of graphite which are not less than 200 meshes are sieved; 2.5-3.5 parts of resin, 6-8 parts of modified asphalt, 10-14 parts of tar and 3-5 parts of silica sol. By optimizing the composition and proportion of the raw materials, particularly adopting the ferro-silicon nitride and the silica sol in a certain proportion and combining the preparation method provided by the invention, the volume density of the product can be remarkably improved, the anti-scouring capacity is improved, and the tapping time is prolonged by 20-30 min on the basis of 90-120 min in the prior art.

Description

technical field [0001] The invention belongs to the technical field of refractory material preparation, and specifically relates to a kind of 3 Anhydrous taphole clay for blast furnace and preparation method thereof. Background technique [0002] In the prior art, small blast furnaces are gradually replaced by large ironmaking blast furnaces, such as 2000-3000 m 3 The blast furnace has high smelting strength and higher requirements for the anhydrous taphole clay for plugging the tap hole. Good sintering performance and long tapping time. The waterless taphole clay in the prior art cannot meet the above requirements at the same time. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a kind of application for 2000~3000m in order to solve the deficiencies of the prior art 3 Anhydrous taphole clay for blast furnace and preparation method thereof. [0004] The purpose of this invention is to realize with following technical scheme: [00...

Claims

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Application Information

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IPC IPC(8): C04B35/103C04B35/622
CPCC04B35/103C04B35/622C04B2235/349C04B2235/425C04B2235/3418C04B2235/3873C04B2235/3852C04B2235/3826C04B2235/3463C04B2235/5427C04B2235/5436Y02P40/60
Inventor 康晓旭康少涛康晓阳
Owner GONGYI CITY HONGYU REFRACTORIES CO LTD
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